Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets- Intangible Assets (Details)

v3.4.0.3
Goodwill and Intangible Assets- Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount $ 26,835   $ 26,959
Accumulated Amortization 20,750   20,189
Intangible assets, net 6,085   6,770
Amortization of intangible assets 604 $ 1,009  
Customer contracts      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 7,880   7,898
Accumulated Amortization 7,709   7,683
Amortization of intangible assets 46 228  
Customer relationships      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 12,361   12,496
Accumulated Amortization 7,044   6,621
Non-compete agreements      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 3,316   3,324
Accumulated Amortization 3,175   3,149
Technology      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 2,734   2,701
Accumulated Amortization 2,322   2,241
Trade names      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 544   540
Accumulated Amortization 500   $ 495
Customer Relationships, Noncompete Agreements, Technology and Trade Names      
Finite-Lived Intangible Assets [Line Items]      
Amortization of intangible assets $ 558 $ 781  
Minimum      
Finite-Lived Intangible Assets [Line Items]      
Estimated useful life 4 years    
Minimum | Customer contracts      
Finite-Lived Intangible Assets [Line Items]      
Acquired intangible assets useful life 1 year    
Maximum      
Finite-Lived Intangible Assets [Line Items]      
Estimated useful life 15 years    
Maximum | Customer contracts      
Finite-Lived Intangible Assets [Line Items]      
Acquired intangible assets useful life 5 years